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A268571 as a simple table

n a(n)
1 0
2 0
3 1
4 1
5 2
6 5
7 16
8 52
9 205
10 863

[0,0,1,1,2,5,16,52,205,863]

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Last modified August 9 21:08 EDT 2022. Contains 356026 sequences. (Running on oeis4.)